Lithological Composition, Lithostratigraphy, and Lithofacies Zonation of the PS Deposits

Productive Series (PS) is widely occurring within the western SCB, including the territories of the Absheron peninsula, Absheron Archipelago, Baku Archipelago, Jeirankechmessian depression, Alyat ridge, Lower Kur depression, as well as in a sedimentary section of PreCaspian-Guba region within the western Middle Caspian basin. The following lithofacies types of PS sediments are distinguished: Volga (Absheron), Gobustan, Kur (including Geilyar (Lengebiz) sub-facies), Pre-Caspian, and South-Caspian. The latter unites the features of all the mentioned lithofacies zones and represents their continuation to the shelf zone of the basin. At the same time, all the lithofacies zones are characterized by similar features as an accumulation of thick terrigenous sediments, lack of mollusk fauna, and scarcity of microfauna remains.